Something looks to be wrong indeed.
First, if you don't have a complete backup, see what of your own files (pics, documents, music, etc) you can copy from that SSD to the brand new external you made. That can be anything between 0 and 100% , which would mean you lose between 100 and 0%. Such happens if you don't have a backup.
Then run a chkdsk and diagnostics to see if the SSD is still functioning and reliable. If not, get a new one under warranty.
Then go back to your latest image backup or (if you don't have that) reinstall Windows and all your applications, restore your data from your backup and make that image backup to go back to when it fails again.
Okay so I'm kinda freaking out right now. I recently bought an HP Omen 870 desktop and I bought a Samsung EVO 500 gb SSD separately. After using the PC for two days, I installed the SSD and cloned everything over from my HDD, then made the SSD my primary hard drive. I kept the HDD the way it was for backup for a few days, then once I saw that everything was running fine, I formatted my HDD so I can use it for extra storage. That was last night, and everything continued working fine, but then I booted up today and I got to the desktop, where it said that the file or drive is corrupted and unreadable. This was my C drive, so I couldn't access or use anything at all. I then decided to do a system restore (not sure if that was a good or bad idea) and it looked like it was going fine up until the end where it showed the message, "Restoration Incomplete," with no other information. In the background, there's a cmd box open that says "The system cannot find the drive specified." This is where I'm stuck right now and I don't really know what to do. Any tips on how to go about fixing this would be greatly appreciated, thank you!

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